/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package Servlet.user;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.CreateException;
import javax.ejb.ObjectNotFoundException;
import javax.ejb.RemoveException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import server.entity.Category;
import server.process.ProcessBeanLocal;

/**
 *
 * @author Hoang
 */
public class doCollection extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String action = request.getParameter("action");
            if (action.equals("Create")) {
                String collectionName = request.getParameter("txtColName");
                String description = request.getParameter("txtDescription");
                HttpSession session = request.getSession();
                String username = (String) session.getAttribute("username");
                String imange = request.getParameter("image");
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                try {
                    local.createNewCollection(collectionName, description, username, false, imange);
                    response.sendRedirect("myCollection.jsp");
                } catch (CreateException ex) {
                    Logger.getLogger(doCollection.class.getName()).log(Level.SEVERE, null, ex);
                    out.println(ex.getMessage());
                } catch (ObjectNotFoundException ex) {
                    Logger.getLogger(doCollection.class.getName()).log(Level.SEVERE, null, ex);
                    out.println(ex.getMessage());
                }
            } else if (action.equals("Change")) {
                String collectionName = request.getParameter("txtCollectionName");
                String description = request.getParameter("txtCollectionDesc");
                String collectionID = request.getParameter("txtCollectionID");
                HttpSession session = request.getSession();
                String username = (String) session.getAttribute("username");
                String image = request.getParameter("image");
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                try {
                    local.Updatecategory(collectionID, collectionName, description, username, false, image);
                    out.println("Update successful");
                } catch (ObjectNotFoundException ex) {
                    Logger.getLogger(doCollection.class.getName()).log(Level.SEVERE, null, ex);
                }
            } else if (action.equals("getListPublic")) {
                HttpSession session = request.getSession();
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                Category[] arrCategorys = local.getListCollection(session.getAttribute("username").toString(), true);
                for (int i = 0; i < arrCategorys.length; i++) {
                    out.println("<option value='" + arrCategorys[i].getCollectionID() + "'>" + arrCategorys[i].getCollectionName() + "</option>");
                }
            } else if (action.equals("getListPrivate")) {
                HttpSession session = request.getSession();
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                Category[] arrCategorys = local.getListCollection(session.getAttribute("username").toString(), false);
                for (int i = 0; i < arrCategorys.length; i++) {
                    out.println("<option value='" + arrCategorys[i].getCollectionID() + "'>" + arrCategorys[i].getCollectionName() + "</option>");
                }
            } else if (action.equals("delete")) {
                HttpSession session = request.getSession();
                String username = (String) session.getAttribute("username");
                String id = request.getParameter("id");
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                boolean rm = false;
                try {
                    rm = local.removeCategory(id, username, false);
                } catch (RemoveException ex) {
                    System.out.println(ex.getMessage());
                }
                if (rm) {
                    //
                    RequestDispatcher rd = request.getRequestDispatcher("myCollection.jsp");
                    rd.forward(request, response);
                } else {
                    out.println("Delete failed");
                }
            } else if (action.equals("checkexist")) {
                HttpSession session = request.getSession();
                String username = (String) session.getAttribute("username");
                String catname = request.getParameter("catname");
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                boolean result = local.isCategoryNameExist(catname, username, false);
                out.println(result);
                return;
            } else if (action.equals("mycollection")) {
                Context ctx = new InitialContext();
                ProcessBeanLocal local = (ProcessBeanLocal) ctx.lookup("ProcessLocalJNDI");
                HttpSession session = request.getSession();
                String username = (String) session.getAttribute("username");
                Category[] arrCategorys = local.getListCollection(username, false);
                RequestDispatcher rd = request.getRequestDispatcher("myCollection.jsp");
                request.setAttribute("list", arrCategorys);
                rd.forward(request, response);   
            }
        } catch (ObjectNotFoundException ex) {
            Logger.getLogger(doCollection.class.getName()).log(Level.SEVERE, null, ex);
        } catch (RuntimeException ex) {
            Logger.getLogger(doCollection.class.getName()).log(Level.SEVERE, null, ex);
        } catch (NamingException ex) {
            Logger.getLogger(doCollection.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
